I can understand why you put the Two Shooters at the top of your hate list. They're both shitty single-player games.
I can also understand why people accuse you of an anti-shooter bias because of it. You don't have an anti-shooter bias, you have an anti-multiplayer bias. You make no effort to hide it, it's something that's well-known to your regulars, and it's entirely your prerogative, so it's not the problem per se.
The problem is that Battlefield 3 (I can't speak for MW3 as I haven't played it for more than a few minutes on my step-son's XBox) is a superb multiplayer FPS that encourages fantastic teamwork, allows genuine tactical freedom and is hilarious fun if you want it to be, especially if you have a whole bunch of friends to play it with.
I've barely played an FPS online since I got a life about 8 years ago, but I've put almost 100 hours into BF3. It really is that good a multiplayer game.
So the problem, and you should really understand this without me or anyone else having to spell it out for you, is that you've judged a game with a 90% focus on multiplayer on its single-player experience. Perhaps if you'd given the award to the "BF3 and MW3 Single Player Campaigns" instead of the games as a whole, people would understand.
Consciously or not, you've deliberately courted controversy with this one. I don't buy your ignorance one bit
P.S. I really enjoyed Dead Island for the same reasons: in co-op with friends it was hilarious!